LM4732
Optional External Component
Interaction
The optional external components have specific desired
functions. Their values are chosen to reduce the bandwidth
and eliminate unwanted high frequency oscillation. They
may, however, cause certain undesirable effects when they
interact. Interaction may occur when the components pro-
duce reactions that are nearly equal to one another. One
example is the coupling capacitor, C
C
, and the compensa-
tion capacitor, C
f
. These two components are low imped-
ances at certain frequencies. They may couple signals from
the input to the output. Please take careful note of basic
amplifier component functionality when selecting the value of
these components and their placement on a printed circuit
board (PCB).
The optional external components shown in
and
and described above, are applicable in both single
and split supply voltage configurations.
Typical Performance Characteristics
Supply Current
vs Supply Voltage
PSRR vs Frequency
±
29V, V
RIPPLE
= 1V
RMS
R
L
= 8Ω, 80kHz BW
200724E5
200724E4
THD+N vs Frequency
±
22V, P
OUT
= 1W/Channel
R
L
= 4Ω, 80kHz BW
THD+N vs Frequency
±
29V, P
OUT
= 1W/Channel
R
L
= 8Ω, 80kHz BW
200724D8
200724E6
9
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